From Wiktionary, the free dictionary
Formed from поя́ (pojá, “to irrigate, to give water”) + -илня (-ilnja).
пои́лня • (poílnja) f
- feeding room
- device for feeding livestock
- “поилня”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
- “поилня”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010